Announcement

Collapse
No announcement yet.

Ubuntu 12.04 LTS: 32-bit vs. 64-bit Performance

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • #46
    Originally posted by kobblestown View Post
    In any case, given only 1GB RAM, or less, I would run 32-bit Linux. Especially with a Core 2 processor. The Cor 2 microarchitecture has an optimization (micro-ops fusion I think) which is only available in 32-bit.
    True, but the performance you gain from micro-op fusion is negligible compared to what you can gain from having 8 additional general purpose registers.

    Comment


    • #47
      So how do you switch?

      I've read there is no way to upgrade. People just recommend to make a copy of /home and reinstall the system.

      Maybe that's ok for some users, but I find that recommendation a bit dangerous because:
      • I have settings for things like Apache and MySQL
      • There is the /var folder where my www lives
      • I changed settings I no longer remember to lower the latency of the sound card.
      • I did some links to fix libraries that didn't work by default.
      • Where were those USB settings to make my Android phone visible?
      • I made my /tmp folder a ram disk.
      • I changed system settings to make the SSD faster.
      And much more. Basically, two years tweaking my system. I should have kept a log...

      What would you do?

      The reason to move to 64bit is that programs like Darktable seem to be much more stable in 64bit, and video rendering would be apparently faster.

      Comment


      • #48
        Originally posted by hamoid View Post
        So how do you switch?

        I've read there is no way to upgrade. People just recommend to make a copy of /home and reinstall the system.

        Maybe that's ok for some users, but I find that recommendation a bit dangerous because:
        • I have settings for things like Apache and MySQL
        • There is the /var folder where my www lives
        • I changed settings I no longer remember to lower the latency of the sound card.
        • I did some links to fix libraries that didn't work by default.
        • Where were those USB settings to make my Android phone visible?
        • I made my /tmp folder a ram disk.
        • I changed system settings to make the SSD faster.
        And much more. Basically, two years tweaking my system. I should have kept a log...

        What would you do?

        The reason to move to 64bit is that programs like Darktable seem to be much more stable in 64bit, and video rendering would be apparently faster.
        Not sure why you bothered with 32 bit to begin with then. Anyways, if you have another hard drive I'd suggest the easiest method would be to install everything you have on that and copy your settings and stuff over from your old setup. That way, if you forget how you set up something it won't be a big deal because you can just reboot into your old setup. When you think you've got everything configured, just clone that hard drive to the one with your old setup.

        I'm not sure about ubuntu but with debian i'm aware you can install a 64 bit kernel along side a 32 bit. i have no idea how that works when half the system would use 32 bit binaries.

        Comment


        • #49
          Thanks for the ideas. I have an external esata disk which is perfect for that.

          It's also a good way to test if the 64bit is really working fine, and if 12.04 runs ok on my laptop.

          Why I bothered with the 32bit version? Because at that time there was no reason to install the 64bit version.
          Flash was not working on 64bit, I was not editing video, and Darktable did not exist.

          Comment

          Working...
          X